Quantum Bridge Technologies announced it has closed an $8 million Series A funding round led by Primo Capital SGR to accelerate the global transition to quantum-safe cybersecurity infrastructure. The investment round included participation from Wayra, Cadenza VC, Club degli Investitori, HPE, and Bacchus Venture Capital. Combined with previous backing from investors including Alumni Ventures and the University of Toronto, Quantum Bridge has now raised a total of $16 million.
The funding will support the company’s expansion as financial institutions, telecommunications networks, governments, and defense organizations seek protection against emerging quantum computing threats.
Founded in 2019 by Mattia Montagna and Hoi-Kwong Lo, Quantum Bridge emerged from a leading quantum security research group focused on developing quantum-safe communication technologies. The company’s platform integrates with existing infrastructure to help organizations secure sensitive communications while preparing for future quantum threats.
Quantum Bridge’s patented Distributed Symmetric Key Establishment (DSKE) protocol is designed to help organizations generate, distribute, and manage symmetric keys through a decentralized architecture. The approach removes single points of failure, improves scalability, and strengthens long-term cryptographic resilience.
The company said its technology is designed to integrate across existing infrastructure, vendors, and security layers, enabling organizations to implement quantum-safe protection from optical encryptors to application-level systems without disrupting operations. Quantum Bridge positions the platform as a way to make defense-grade cryptographic security practical for commercial environments while supporting scalability, flexibility, and compliance requirements.
Primo Capital manages more than €500 million across investment funds focused on digital technology, healthcare, climate, and space sectors.
KEY QUOTES:
“Leading this round represents a defining milestone for Primo Capital as we establish our footprint in the quantum technology landscape — a sector we view as the cornerstone of digital resilience for the coming decade. Quantum Bridge immediately stood out for the versatility of its architecture, but it was the team that clinched our conviction. The CEO possesses that rare, dual-threat leadership: the deep academic rigor required to build cutting-edge tech and the commercial acumen to navigate the complexities of global institutional markets. This is a team that doesn’t just understand the quantum future; they have built the bridge to reach it today.”
Mara Attardi, Investment Professional, Primo Capital
“National security can’t wait for perfect conditions. We build quantum-safe systems that work inside real networks today — systems designed to keep protecting sovereign communications as the threat landscape evolves. This funding means we can meet more organizations where they are, and get them protected faster.”
Mattia Montagna, Co-Founder And CEO, Quantum Bridge Technologies
